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A typical day on the Fort Pierre National Grasslands

Fort Pierre National Grasslands - South Dakota

Two weeks off of work, winding down as I prepare to return to work tomorrow. It’s been a wonderful (and much needed!) break, with time with the family, and plenty of birding. In two weeks I managed to make it out to central South Dakota three times…more than I normally do all winter! It’s such a magical place for me in winter. Quiet…open…often harsh and unforgiving…yet very restorative for me when I need time alone to recharge.

So what’s the attraction? Central South Dakota? In the dead of winter? Here’s a photo synopsis of what it’s like, all photos from my most recent trip out there last Thursday/Friday.

Fort Pierre National Grasslands - Sunrise
Pre-dawn on the Fort Pierre National Grasslands. Normally I make a (long) day of it, leaving 3 hours before dawn so I can arrive just before the sun rises, and make the most out of short winter days (about 9 hours of sunlight at a minimum). This photo gives you a good idea of what it’s like as you await the sunrise…VAST…open…isolated…and other than barbed wire fences and a few powerlines, often not much of a sign of human habitation. An exciting time as the sun arises, as you just KNOW you’re about to have another wonderful day on the grasslands.
Pronghorn - Fort Pierre National Grasslands
It’s not ALL about birds! While winter raptors are my primary reason for coming to the region, there’s often other wildlife to catch your attention. On this trip I was thrilled to see a large herd of Pronghorn grazing on the rolling hills, just as the sun was rising. Mule Deer and White-tailed Deer are also often seen. Coyotes are certainly around, and I probably see them about every other trip to the Grasslands, but mostly at dawn. They’re extremely shy and difficult to approach.
Buteo Regalis - Ferruginous Hawk - Fort PIerre National Grasslands
There are a few private land holdings within the Grasslands boundaries, but there are more abandoned buildings than any other. In a land that’s often treeless or without any kind of high perches, these abandoned homesteads often are birding hotspots. Here a Ferruginous Hawk is perched next to an abandoned…Packard (?).
Gyrfalcon - Falco rusticolus
RAPTORS are the name of the game on the Fort Pierre National Grasslands, but there’s a definite hierarchy in terms of what I’d love to see!! The Holy Grail bird of the Fort Pierre National Grasslands…a Gyrfalcon! And not only a Gyrfalcon, but an adult Gyrfalcon. In the 20 years I’ve been birding the area, I’ve probably seen about 25 Gyrfalcons. I believe I can count on one hand how many of those have been adults, so I was thrilled to run across one on this trip. I watched from a long distance and took some photos from further away than I normally would, as I wanted to make sure I documented this bird’s presence. I’m glad I stopped so far away and grabbed some photos, because after watching it for perhaps 30 seconds, it flushed and flew away, and I never again found it on this trip.
Greater Prairie Chicken in Flight - Tympanuchus cupido
Why are there so many raptors on the Fort Pierre National Grasslands? Clearly raptors go where the food is. There undoubtedly must be a lot of voles and other small rodents, as that’s what I primarily see birds like Rough-legged Hawks catch. But another attractant to birds like the Gyrfalcon above are all the Ring-necked Pheasants, Sharp-tailed Grouse, and Greater Prairie Chickens that are around. It’s a popular hunting location for all of those species, and given that surrounding private lands often release birds (pheasants) for hunting, there’s never a shortage of any of those species. The native Sharp-tailed Grouse and Greater Prairie Chickens are VERY wary as a result of the hunting pressure, and I have few close photos of either species. On this trip I was very happy to get my first ever flight photo of a Greater Prairie Chicken. With the recent heavy snow, many of the game birds were struggling to find foraging grounds, and were concentrated along the roads more than usual.
Ring-necked Pheasant - Phasianus colchicus
Speaking of Pheasants…they are widespread in the area, but are probably less common on the Grasslands themselves than on the surrounding private lands.
Bald Eagle - Haliaeetus leucocephalus
You’ll see both Bald Eagles and Golden Eagles on the Grasslands. Golden Eagles are more often seen (they were downright common on the three recent trips I took), but even far from any open water, you will also often see Bald Eagles. I’m aware of at least 4 different nests just to the south of the Fort Pierre National Grasslands themselves, near the Presho area. This photo is along the Missouri River just to the north of the Grasslands, a stronghold of the species in the winter months.
Prairie Falcon - Falco mexicanus
A Prairie Falcon in flight. They’re definitely a larger bird than the American Kestrels you see a lot in the summer months (and to a much lesser extent, in winter). They’re larger than the Merlins you sometimes see on the Grasslands (including one I saw Friday). But they share the same “falcon” characteristic when they take flight, with much faster wingbeats than all the Buteo hawks in the region, and a more tapered wing. Couple the relatively large size and that classic falcon flight pattern, and Prairie Falcons OFTEN get my heart racing as I’m thinking that bird flying up in front of me may be a Gyrfalcon! On a typical day on the Grasslands though, I’m lucky if I see a Gyrfalcon, yet I almost always see 3 or 4 Prairie Falcons. Usually they’re pretty shy, but there’s been one hanging around County Line Road on the grasslands this winter that’s uncharacteristically curious. He’ll flush when you get anywhere close, as do nearly all Prairie Falcons. But then he has this habit of circling me one or two times before finding a different perch! It’s not often I can grab a Prairie Falcon in flight, so I’m pretty happy to have seen this guy on this past trip.
Rough-legged Hawk - Buteo lagopus
Always by FAR the most common raptor on the Fort Pierre National Grasslands in winter…a Rough-legged Hawk. I didn’t stop and record each one in eBird as I often do. But on a trip to the area the week before I saw nearly 50 of them, and I would suspect I tallied a similar number on this past trip. Gorgeous birds, and quite variable in plumage, although this is the typical plumage that you see.
Buteo jamaicensis - Red-tailed Hawk
The Fort Pierre National Grasslands are mostly treeless, and even during the summer months I’ve found Red-tailed Hawks are typically concentrated in the few wooded ravines, shelterbelts, or abandoned farmsteads in the area. In winter, those site tendencies are even more pronounced. Many Red-tailed Hawks move further south for the winter, and I find MANY more Red-tailed Hawks just south of the Grasslands (such as the Presho area) in winter than I do on the Grasslands themselves. However, over the 20+ years I’ve been birding the area, it’s quite obvious to me that more birds are overwintering in the region than used to. Similarly, 20 years ago it wasn’t common to find Western Meadowlark overwintering in any numbers, but on this past trip, there were a few spots where I stirred up a dozen or so Meadowlarks hanging out together. More Red-tailed Hawks, more Meadowlarks, fewer Gyrfalcons….that’s my impression of what’s happened over the last 20 years.
Golden Eagle - Aquila chrysaetos
The one photo here that’s not from last Thursday/Friday, as this was taken on the Grasslands 2 days before Christmas. My impression is that BOTH eagle species are getting much more common on the Grasslands. I have few if any photos of them 10 to 20 years ago, but now I typically see 6-10 each time I go out.

An actual day of BIRDING!!

After being given a new role at work a month ago, I’ve been traveling and quite busy. I was determined to do something today I haven’t done in quite a while…take a whole day and just go birding. I wasn’t exactly optimistic when the day started. I wanted to see if raptors were starting to show up in the central part of the state, but thought it was probably a little too early.

I needn’t have worried! There were still a lot of Red-tailed Hawks around, probably more than the Rough-legged Hawks I saw. That’s one sign it’s still early in the winter raptor season, as pretty soon Rough-legged Hawks will greatly outnumber Red-tailed Hawks in that part of the state. It’s also early for any Gyrfalcon to be around on the grasslands, as it seems they typically don’t do so until most of the water freezes (I assume they hunt waterfowl around open water). But overall, I had great weather and a boatload of raptors today.

I did my “usual” route…starting out around the Presho and Kennebec area near dawn, working my way west, then heading up towards Pierre, including a stop on the Fort Pierre National Grasslands. For the day I ended up seeing at least 75 individual raptors, including ~10 Golden Eagles, ~10 Bald Eagles, ~25 Red-tailed Hawks, ~20 Rough-legged Hawks, plus 3 Ferruginous Hawks, 2 Prairie Falcons, several Northern Harriers, and even a Merlin.

Even better, I got a lifer below Oahe dam! A “photographic lifer”, a White-winged Scoter that was diving right next to shore and gobbling up crawfish. It’s a species I hadn’t seen before in South Dakota until about a week and a half ago, and today I was able to get some very close range photos.

A great day! And given how many raptors were around so early in the winter season, here’s hoping it’s an utterly spectacular winter for raptors in South Dakota. Some pics from the day:

Golden Eagle - Aquila chrysaetos
One of the rare times a Golden Eagle has sat still on its perch while I snapped a photo. And even here, he only put up with me for a couple of quick shots before he slowly lifted off and sailed away.
Ferruginous Hawk - Buteo regalis
Three Ferruginous Hawks for the day…always a treat. It was nice to get one in a natural perch, as I think every photo I have of them is in flight, or on a fence post.
White-winged Scoter - Melanitta deglandi
A (photographic) lifer! This White-winged Scoter was very close to the rip-rap along the shoreline below Oahe Dam. I ended up watching him for about 20 minutes, and in that time he caught and gobbled down two crawfish.
Rough-legged Hawk - Buteo lagopus
A Rough-legged Hawk in flight. Usually the most numerous raptor in the areas I go in winter, there were quite a few around, but I suspect many haven’t arrived yet.
Red-tailed Hawk - Buteo jamaicensis
The first bird of the day, a Red-tailed Hawk in the warm morning light of dawn. The most numerous raptor of the day, although as winter starts to set in, some of these will drift further south.
Red-tailed Hawk - Krider's
Another Red-tailed Hawk, but a VERY different looking one! This is what I would call a Krider’s…a very pale variant of a Red-tailed Hawk.
Lesser Black-backed gull - Larus fuscus
There were certainly a lot of gulls below Oahe Dam, taking advantage of the massive amount of water they’re pushing through right now in an effort to get water levels down by next spring. Including in the mix were at least three Lesser Black-backed Gulls.

Bird sounds in cinema – Confirmation I haven’t just been hearing things!

Someone on Twitter pointed this story out from the Minneapolis Star Tribune. I’m glad they brought it to my attention, as I was almost wondering if I was just hearing things all of these years!

There is nothing quite like the calls from a loon. Hollywood can’t get enough of them, either.

Evidently I’m not the only one who has noticed that Hollywood LOVES to use certain bird songs in movies…whether or not it’s appropriate. Common Loon (any kind of “wilderness), Red-tailed Hawk (the default vocalization for ANY raptor they show in a movie), and Laughing Kookaburra (pretty much in any “jungle” movie scene) seem to be the three that I notice the most.

This piece in the Star Tribune provides a nice list of movies where the Common Loon pops up. I’m glad I wasn’t imagining hearing a Common Loon cry at the end of Avengers: Infinity War!  That one takes the cake as most ridiculous, given that it was happening not just in inappropriate habitat, but on another planet!!  I missed some of these, as in Game of Thrones!

Spring busting out in birds

It’s been a damned cold spring. There’s no denying that.  As I speak, it’s snowing to beat the band…on April 8th…and we’re supposed to end up with about 5 more inches.  It’s been a winter of MANY 3-6 inch snows, and winter doesn’t seem to want to give up its grip just yet. But the birds are putting their two cents in and saying they will NOT be deterred.

I went out west of Sioux Falls last night, on a kind of a day that’s been rare around here lately…sunny, and no wind (but still pretty cold).  Even now, most of the big lakes are still frozen over, as are many of the small ones. Water is starting to open up, and the waterfowl are really starting to stack up as they await warmer conditions (and more open water up north) to allow their continued migration.  There are still geese around by thousands.  I had a blast at one location last night, watching as flocks of Snow, Greater White-fronted, Canada, and some Ross’s Geese would intermittently land or take off from a group of geese resting by a large slough. Ducks were on pretty much every available patch of open water, with some spots having incredible concentrations of Lesser Scaup and Ring-necked Ducks, as well as pretty much every other duck species you could ever expect to find here.

A highlight came late in the evening when I came across a Great Horned Owl perched in the relative open (for a Great Horned Owl). He was quite unconcerned by the guy with the camera, giving me some of the best looks and photos I’ve had of the species.  As the snow and wind lash us again today, it was also a nice reminder that spring IS here and better weather is ahead!

Great Horned Owl - Bubo virginianus

A quite tame Great Horned Owl, casually giving me a glance as he prepares in the late evening for a night of hunting.

Greater White-fronted Goose - Anser albifrons

The most numerous goose species were Greater White-fronted, of which I came across several thousand during the course of the evening.

Common Merganser - Mergus merganser

A female Common Merganser, sitting at one of the open spots in the ice and occasionally making a dive in search of food. Always loved the “haircut” on the females.

Red-tailed Hawk - Buteo jamaicensis

One sure sign of spring here is when you seemingly see Red-tailed Hawks and American Kestrels on every every telephone pole. Plenty of both last night, including this dude giving me a staredown.

Canada Goose - Branta canadensis

Another sure sign of spring…when the ever present Canada Geese are vastly outnumbered by other geese species.

Snow Goose - Chen caerulescens

Still plenty of Snow Geese around. Starting to get a little late to have them stacked up in such huge numbers, but the weather hasn’t been too cooperative.

 

Birds in Movies – “Gamenight” gets it right!!

Common Nighthawk Drawing - Chordeiles minor

Drawing of a Common Nighthawk I did a few years ago. They have a VERY distinctive call when flying around at dusk or at night, something that really stands out on the soundtrack when watching a movie! Kudos to “GameNight” for the correct use of a bird call, in the proper time and context!

As a birder, one major pet peeve of mine…Hollywood’s (mis-)use of birds in movies! It seems that Hollywood typically has about 3 different bird vocalizations that are used in any situation a bird is present. One is the ubiquitous Red-tailed Hawk screaming cry, something they use for ANY raptor that happens to even tangentially appear on a screen. Conan O’Brien wasn’t alone when making this erroneous use of a Red-tailed Hawk call, but he WAS called out by birders for his actions!! Bald Eagles are often shown in movies and TV, but the more iconic Red-tailed Hawk call is usually used instead of the real Bald Eagle cry.

The second iconic call that’s heard ALL the time is the haunting call of a Common Loon. Occasionally it’s used in the proper setting and context, but there are SO many times when movie characters are out “in the wild” and the call of a Common Loon is dubbed in the background.  What’s that?  Your favorite character is roaming the forests of the Appalachians? Perhaps it’s a wild setting, but NOT EVERY WILD SETTING SHOULD HAVE LOON CALLS PLAYING IN THE BACKGROUND!! This site notes several “misplaced” birds in TV and movies, including the mis-use of Common Loon calls in Murder She Wrote and Raiders of the Lost Ark (presumably while in Peru!!). The Common Loon has also been mis-used visually…something I noticed IMMEDIATELY when watching Finding Dory. “Becky” is the loopy Common Loon that plays a role in the rescue scenes in Finding Dory, along the California coastline. The presence of a Common Loon along the California coast isn’t out of place IN WINTER.  But “Becky” in Finding Dory is a Common Loon in full summer breeding plumage…NOT LIKELY!!

The third call that’s heard in EVERY jungle scene is the laughing call of a Kookaburra. They’re a bird found in Australia, but listen to any jungle scene supposedly set in Africa, South America, or southeast Asia, and you’ll STILL likely hear the wild calls of a Kookaburra.

Given how often birds are mis-used in movies, I always get a bit of satisfaction when I see a movie that gets it right!  Tonight my wife and I went to see “GameNight“, starring Justin Bateman and Rachel McAdams.  It’s a really funny movie!!  We both greatly enjoyed it.  The only time birds were evident (and surely ONLY to me, among the movie crowd) was a scene late in the movie.  It was a setting in a relatively dense urban setting, on a bridge over a large river and fairly out in the open. Large buildings could be seen in the surrounding area, and it was night. As the scene played out (I won’t spoil the movie for you here!), I could CLEARLY hear Common Nighthawks giving their typical flight calls.

PERFECT!! You often DO hear Common Nighthawks as they fly through the night skies in and around urban areas, picking off flying insects in flight with their massive, gaping maw.  One of the places I’ve heard them the most is at the airport here in Sioux Falls. They typically use rocky areas to breed, and the rocky roofs that many urban buildings use work perfectly for their purposes.

WELL DONE GAMENIGHT!!  You get a rare GOLD STAR for proper use of a bird in a movie!!

Curious Red-tailed Hawks

When you encounter a bird in the wild, there’s a standard series of events that occur. Far too often, the encounter ends when the bird flies away as you approach.  Hence the challenge for a bird photographer!! But every once in a while, the quarry seems just as interested as the photographer.  Today was one of those experiences.

I was birding a little bit in western Minnehaha County, west of Sioux Falls. I saw a pair of Red-tailed Hawks sitting on adjacent fence posts on the road in front of me. In these situations, I always have my camera ready when I approach, just on the off change that the bird would actually stay perched and not flush. However, as per usual, the pair both took off well before I got in camera range.

Was was NOT per usual is their behavior after taking flight. Instead of flying off to a distant perch, the pair banked…and turned back towards me as I stood on the side of the road. For the next 3 or four minutes, both of them lazily circled above and around me as I furiously clicked away.  Getting nice flight photos of wild raptors is ALWAYS a welcome opportunity…here are some photos of the pair.

Red-tailed Hawk - Buteo jamaicensis

Red-tailed Hawk - Buteo jamaicensisRed-tailed Hawk - Buteo jamaicensisRed-tailed Hawk - Buteo jamaicensisRed-tailed Hawk - Buteo jamaicensis

Where did the Fort Pierre National Grasslands raptors go?

Central South Dakota - Raptor Sightings

Winter raptor sightings in central South Dakota over the last 5 years. The Fort Pierre National Grasslands themselves used to be “the” hotspot for winter raptors, including great chances for rarities like Gyrfalcons and Snowy Owls. In recent years, raptor numbers are incredibly low compared to areas just south of the Grasslands, in and around Presho and Kennebec. Click on the map above (or any other image) for a larger view.

I still vividly remember the first time I had ever visited the Fort Pierre National Grasslands.  It was 2000, and I had been bitten by the birding bug.  Hard. Much of my free time was spent birding and taking photos, and as a new birder, there certainly were plenty of “new” birds to discover, just around my home town of Brandon.  One of my friends at work was an avid, lifetime birder, and he not only helped with identification of the birds in my (quite poor!) early photos, but he also helped to stoke the birding fires.  That was very evident when reports came in of a Gyrfalcon on the Fort Pierre National Grasslands.  In the years since, the Grasslands have become known as a wonderful location for finding these very rare winter visitors, but at the time, it was something rather novel.  Given that my lifetime birder friend had never seen a Gyrfalcon, I knew this was something special for a birder and I was excited to try to find it. Thus began 16 winters of making periodic birding treks to the Grasslands.

It couldn’t have been easier on that first visit.  The famed “Pheasant Farm Gyrfalcon” was hanging around a farmstead that raised pheasants for hunting operations in the region.  I talked with Doug B. in Pierre, a great birding contact who also helped a lot in my early birding years, and he provided directions (we’re WELL before cell phones and google maps here!).  He had said that he was likely to be around that location early on a Saturday morning, so I made plans to get up ridiculously early and drive to the Fort Pierre National Grasslands and arrive at that spot just after dawn.

Rough-legged Hawk - Buteo lagopus

The ubiquitous Rough-Legged Hawk, once seemingly found on every other fence post and telephone pole on the Fort Pierre National Grasslands. However, for the last 5 years, they’ve been curiously absent.

That cold December day came, I set the alarm, packed up my equipment at 4:30, and started the 3+ hour drive.  My timing was good, and I arrived on County Line Road right around 8:00 AM. As I reached an old abandoned schoolhouse that marked the location close to the pheasant farm, I saw a pair of cars.  I got out, saw Doug B., and asked if they’d seen the Gyrfalcon.  He smiled, and pointed to the top of a nearby telephone pole, and there it was!  My first Gyrfalcon, about as easy a “capture” as a birder can ever hope for with such a rarity!

From that day forward, I was hooked on the Grasslands.  Given that it’s about 3 1/2 hours from home, it’s not a love of convenience!  But I quickly learned to appreciate the isolation and beauty of the area. Most days on the Grasslands, you run into very few people, and there are times after a nice wet period where the beauty of the grasslands and flowers can be really spectacular.  But of course, it’s the birding that was the main attractant for me, and my GOODNESS what incredible birding there was.  Winter in the middle of South Dakota may not sound like a time for vibrant bird life, but the Fort Pierre National Grasslands was building a reputation as a magnet for raptors. This not only included one of the best chances in all of the lower 48 states to see a Gyrfalcon, but also a diverse list of other raptors that spent their winter months on the Grasslands.  Rough-legged Hawks were found in extremely high numbers, such that many times it was quite rare to drive more than half a mile on County Line Road and NOT see a Rough-legged Hawk hanging out on a telephone pole or fence post.  It’s the first place I saw a massive, incredibly powerful Golden Eagle.  It’s the place where I first saw a Ferruginous Hawk, a bird with such a brilliantly white underside that from a distance I thought I was about to see my first Snowy Owl.  It wasn’t that year, but later the Fort Pierre National Grasslands WERE the place I saw my first Snowy Owl, including one incredible year where Snowy Owls were practically as abundant as the ever-present Rough-legged Hawks. It’s the first place I saw a Prairie Falcon, a bird that for a long time was a photographic nemesis for me given their predilection for flushing and flying away whenever I got within 1/4 of a mile of one.  It’s the first place I saw a Short-eared Owl, a summer-time encounter where two adults were tending 4 younger birds.  That encounter concluded with an adult circling me for several minutes as I stood outside my car, resulting in one of my most memorable photo opportunities (and a new Canon DSLR camera body, thanks to the photo winning a nationwide Canon photo contest!).

Winter Sightings - Rough-legged Hawk

Winter sightings of just Rough-legged Hawks. Note the incredibly dense populations near I-90, and the sharp drop off towards the Grasslands in the north.

There have been days on the Grasslands where a full, complete day of birding could simply consist of driving back-and-forth on County Line Road and occasionally taking one of the small gravel roads that connect to it.  One could potentially stay within a relatively small driving area of 10 to 20 square miles, and find dozens, upon dozens, upon dozens of raptors.  Since that first day in 2000, I’ve had some of my most memorable photo experiences on the Fort Pierre National Grasslands in winter, including finally getting a close shot of a Prairie Falcon, having a curious first-year Gyrfalcon circle me in curiosity in much the same way that Short-eared Owl did years before, capturing a photo of the massive wingspan of a Golden Eagle as it takes flight, and finally capturing my first decent photos of a Snowy Owl.  During all my winter trips to the Fort Pierre National Grasslands, I learned to appreciate not only the Grasslands themselves, but the area south of the Grasslands.  I’d necessarily drive the I-90 corridor past Reliance, Kennebec, and Presho to get to the Grasslands themselves, and couldn’t help notice all the raptors in the area.  Soon, my “Grasslands” birding trips became “central South Dakota” birding trips, with days where I’d usually spend mornings in the Presho area and afternoons on the Fort Pierre National Grasslands.  Birding life was good, and many a cold, dismal, South Dakota winter was saved by the vibrant display of life that was always available on the Grasslands.

And then…something happened.  It started about 5 years ago, when I planned one of my “usual” winter trips to the area.  The first half of the trip was the same as always…plenty of raptors of all kinds in the Presho area, and plenty of photo opportunities.  However, as I headed north towards the Grasslands themselves, the birds disappeared. Given my past history of finding winter raptors on the Grasslands, I kept expecting the birds to show up around the next corner, but…they never did.  There was an occasional raptor here or there, primarily Golden Eagles or Ferruginous Hawks, but the incredible density of Rough-legged Hawks, the species that once made up a good 80% of all the raptors found on the Grasslands, was simply absent.  Almost TOTALLY absent.

Greater Prairie Chicken - Tympanuchus cupido

A Greater Prairie Chicken on the Fort Pierre National Grasslands. Whatever the cause of the raptor decline on the Grasslands, it doesn’t appear to be because there’s been a noticeable decline of gamebirds.

That first winter after the raptors disappeared, I just speculated that something happened to the prey base that attracted the raptors. When driving the Grasslands, you always saw plenty of Ring-necked Pheasants, Greater Prairie Chickens, and Sharp-tailed Grouse.  There were several times where I’d sat in awe as a Gyrfalcon dive-bombed pheasants in search of a meal, and clearly the gamebirds in the area were one thing that attracted raptors.  There didn’t seem to be any obvious crash in the populations of these three gamebird species. The famed Pheasant Farm near County Line Road had stopped raising pheasants, but that’s such a local phenomenon that it couldn’t explain the drop in raptors across all the grasslands.  Indeed, this winter I visited the Grasslands a couple of days after Christmas, when a massive storm had coated the region in snow and crusty ice.  I ran across truly massive groups of Sharp-tailed Grouse and Greater Prairie Chickens, milling about in the open and looking for foraging spots in the ice-locked vegetation. Yet despite all the gamebirds that were out, raptors were again curiously absent.  I didn’t spot a single Rough-legged Hawk on the Grasslands themselves, despite easily finding over 30 earlier in the day down by Presho.

If not a decline in gamebirds, what else?  One factor that may play some role is the loss of some truly massive prairie dog towns in the region.  On County Line Road itself, there have always been a few locations for prairie dogs.  Not all raptors target prairie dogs, but Ferruginous Hawks certainly key in on prairie dogs, and prairie dog towns.  Over the last several years, many of the prairie dog towns in the area have disappeared.  Those outside of the administrative boundaries of the Fort Pierre National Grasslands themselves are fair game for poisoning, to clear the land of these “pests” (don’t get me started).  The largest prairie dog town I knew of in the area was on the east end of County Line Road, just outside of the Fort Pierre National Grasslands itself.  It stretched for almost a mile on the north side of the road, with more scattered spots on the south side of the road.  A few years ago, that entire area was clearly poisoned, and the massive colony is gone.

However, the decline in prairie dogs also fails to fully explain the decline in raptors.  There are NO prairie dog towns down by Presho and Kennebec, yet raptors of every kind are still found there in incredible numbers. Perhaps it’s a decline in the small rodent population in the area? For a raptor such as a Rough-legged Hawk, mice and voles make up a huge part of the diet.  Could there have been some cyclic decline in small rodent numbers on the grasslands?  That was my initial thought, but it’s been 5 years since the noticeable and sharp decline in raptor numbers.  You wouldn’t think some repetitive cycle of boom-and-bust rodent populations would be in “bust” mode for so long. Perhaps it’s related to the Prairie Dog poisoning? Could that have also had an impact on small rodents in the area?

A Black-tailed Prairie Dog. There’s little doubt number of these guys HAVE declined around the fringes of the Grasslands, given active poisoning programs.

One other major prey source in the area, particularly for Merlins and Prairie Falcons, are the sometimes huge flocks of Lapland Longspurs, Horned Larks, and Snow Buntings that are found in the area in the winter. The vast majority of Merlin sightings I’ve had in South Dakota have been on the Grasslands themselves or in the Presho area.  During my last trip over Christmas, the first raptor I saw at dawn was a Merlin munching on a freshly caught Horned Lark by Kennebec, and I’ve had numerous other occasions over the years where I’ve seen Merlins feeding on Horned Larks or Lapland Longspurs.   You do see roving flocks of Longspurs, Larks, and Snow Buntings on the Grasslands,certainly enough to capture the attention of a raptor that’s passing through, but the numbers of those potential prey species have seemed higher in the Presho/Kennebec area in recent years.

The maps that are shown in this post are indicative of the raptor numbers on the Fort Pierre National Grasslands vs. the I-90 corridor in recent years. These are all actual sightings made by myself over the last 5 years, and recorded in eBird.  During each and every trip I’ve made in the last 5 years, I take the same general routes. I start in the Kennebec/Presho area around dawn, by mid-morning start to work my way up through the Grasslands themselves, and then start to head back down south again by mid-afternoon. It’s clearly not a precise, spatially distributed sample of the space shown on the map, but over the last 5 years, I have driven most of the roads in a rectangle bounded by Highways 1806 and 273 on the east, an area typically no more than 5-8 miles south of I-90 south of Presho, and Kennebec, westward to Highway 83 and a few miles to the west (particularly around the Sheriff Dam and Richland Wildlife Area, and northward to County-Line Road itself and a few miles north of it.  Good roads are few and far between in parts of the area, particularly north-south roads that take you from Presho northward into the Grasslands.  As a result, the maps here tend to show the 2 major north-south gravel road that connect the two areas, as well as other more easily traveled roads in the area.

Gyrfalcon - Falco rusticolus

A Gyrfalcon taken during the “Golden Years” on the Fort Pierre National Grasslands. This is a very dark-phase juvenile, and I’ve never seen one quite like this. The Grasslands may still be a good spot to try to find this mega-rarity, but it’s not an ideal spot for other winter raptors any more.

I wish I had eBird recordings for the “golden years” on the Grasslands, prior to this last 5 year period, something against which these maps could be compared.  I DO have a vast number of raptor photos taken on the Grasslands themselves from 2000 to present, with most of those from 2011 and earlier.  What’s clear from these maps, however, is just how sharp a delineation there is between the I-90 corridor, and raptor numbers to the north on the Fort Pierre National Grasslands themselves.  On the map at the top that shows all raptor sightings I’ve recorded, note the one north-south road that extends up from the I-90 corridor, about halfway between Presho and Vivian. That’s my main path for getting north, and while there are plenty of raptor sightings south of the Grasslands, those sightings drop off sharply almost exactly at the Grassland boundary itself.  On EVERY trip over the last 5 years, I will drive County line Road, an east-west road along the county boundary (visible towards the north side of these maps).  Once THE hotspot for raptors, in the last 5 years, I have very few raptor sightings of any kind along this road.  Rough-legged Hawk sightings on the Grasslands are incredibly small when compared to the area just to the south of the Grasslands. Red-tailed Hawks and Northern Harriers have always seemed to be much more abundant in the southern part of this area, but in recent years they are almost completely absent once you get 4 or 5 miles north of I-90.  Bald Eagles are often incredibly abundant in and around the Presho area.  I have had days where a dozen or more Bald Eagles are sitting in one concentrated area, and there are also at least 3 active Bald Eagle nests that I’ve found in and around the Presho and Kennebec area.  I have a few Bald Eagle sightings around the Grasslands, but that’s certainly dwarfed by how many have been found in and around Presho.

There are some species that are more evenly distributed in the area.  Golden Eagles are a species I’m almost certain to find on any trip to the area, and it doesn’t seem to matter whether I’m on the Grasslands, or in the Presho/Kennebec area.  Prairie Falcons also seem rather randomly distributed, as they seem rather unpredictable and likely to pop up just about anywhere on this map.  Ferruginous Hawks also seem rather even distributed.  Is there something in common about these species that may make them more likely to be found on the grasslands? Golden Eagles and Ferruginous Hawks are much more likely to key in on mammals, including rabbits and other larger mammals.  Perhaps if it is a population crash of small rodents, they’re still on the Grasslands as they don’t depend on those smaller prey as much as Rough-legged Hawks or other raptors. Prairie Falcons can feed on a variety of prey items, including small birds like Horned Larks, and even large birds like Greater Prairie Chickens.  Perhaps they too would be less sensitive to a decline in small rodent numbers.

I’ll continue to make my winter treks to the central part of the state, including visits to the Grasslands.  Given that the Grasslands themselves are still the location where I’ve seen most of my Gyrfalcons over the years (including the years prior to the data represented in these maps), that alone is clearly worth the time!  Hopefully over the next few years the Grasslands recover from whatever “ails” it in terms of supporting winter raptor numbers.

Telling the difference between hawks (Buteos)

Ferruginous Hawk - Buteo regalis

When this guy flew by and I took photos, what first came to mind was dark-phase of a Rough-legged Hawk. It’s actually a dark-phase Ferruginous Hawk. The vast majority of Ferruginous Hawks that you run across are light phase, so this guy is a perfect example of how confusing it can be sometimes to identify Buteo hawk species.

As I look through visitor stats for my main website, one of the sections that is visited the most is a “Difficult ID’s” section.  That actually surprised me a bit, given that it’s a fairly small part of the website, and not a section that I’ve revised for quite some time.  The section is devoted to helping birders differentiate between certain species that tend to be difficult to identify, with photos, identification tips, key plumage characteristics, and other information.  I only had 10 different classes of birds that it helped to differentiate…thus my surprise to see how many visitors those pages get.  For the first time in probably 7 or 8 years, I updated several of those pages, providing more detailed identification keys, new photos, and range maps to help people see where and when certain species are likely to be present. I also started to think about other species that birders may have trouble identifying.

As I was going through my photos from my day-long trip to central South Dakota to look for winter raptors, one bird had me stumped.  It was a dark-plumaged bird that I originally was sure was a dark-morph Rough-legged Hawk.  After processing the photos, however, it became clear that it was actually a dark-morph Ferruginous Hawk, a color morph I just haven’t run across very often.  Given the variability between the different “Buteo” Hawk species, and given the variability WITHIN a single species in terms of plumage differences between different color morphs, and between adult and juvenile birds, what better addition to the “Difficult ID’s” pages than a very detailed description of how to tell apart Buteo hawks?  I’ve just uploaded the following new page:

How to differentiate between “Buteo” Hawk species

On these pages, I’ve restricted myself to the more common Buteo species that are found in South Dakota and the U.S. as a whole. The more rare or geographically restricted species, such as Gray Hawk, Zone-tailed Hawk, or Short-tailed Hawk, were excluded, so the page could concentrate on the more common species in the U.S.  Species included are Red-tailed Hawk, Ferruginous Hawk, Swainson’s Hawk, Rough-legged Hawk, Red-shouldered Hawk, and Broad-winged Hawk.

For these 6 species I have several pieces of information to assist birders in identification challenges.  That of course include photos that offer a variety of angles, color morphs, bird ages, etc., as well as identification keys and species range maps.  The Buteo Hawk page is undoubtedly the most comprehensive of the “difficult ID’s” pages that I’ve put together to date…I hope that people find it helpful!

Given how much attention those pages are getting, I will likely add new categories of “difficult ID’s” in the coming weeks. If you have any suggestions, let me know!  In the meantime, here are the other species groups that are offered on the difficult ID’s page:

Birding central South Dakota

Bald Eagle - Haliaeetus leucocephalus

A Bald Eagle in flight, taken just north of Kennebec, South Dakota. I saw over a dozen of these guys today on the grasslands, and area far from any large water body. I’ve found multiple huge eagle nests in the area in recent years, as they’ve obviously learned that with all the pheasants, grouse, and prairie chickens in the area, it’s a GREAT place to raise (and feed!) a family!

Today was “the” day.  Once or twice a winter, I’ll get up ridiculously early, drive three hours to the central part of the state to ensure I get there right at dawn, and spend the day birding.  What could possess anyone to head to central South Dakota before dawn in the middle of winter?

Winter raptors!  As I’ve said many times, central South Dakota can be truly spectacular for raptors during the winter time.  That surprises a lot of people.  Winters can be pretty damned harsh up here…the blizzard that shut down the western half of the state for the last 2 days is a great example!  In eastern South Dakota in winter, near Brandon where I live, if I drive rural areas I’m not likely to see much for bird life.  The best I can usually hope for is to run across some flocks of Snow Buntings or Lapland Longspurs, but for the most part, all the crop land in the eastern part of the state is pretty dead in the winter.

It’s dramatically different in the central part of the state.  The reason?  Better habitat with cropland interspersed with a lot of open grassland, and more importantly, plentiful prey!  Ring-necked Pheasants, Sharp-tailed Grouse, and Greater Prairie Chickens are beyond abundant in many parts of central South Dakota, and attract raptors that can take such big prey, including many eagles (Bald and Golden), Ferruginous Hawks, Gyrfalcons, and more.  The wide-open grasslands of the region also hold many large flocks of Lapland Longspurs, Horned Larks, and Snow Buntings in the winter, smaller prey that are favorites for Merlins and Prairie Falcons.  It doesn’t seem to matter the weather, most of the time when I head out there, there are a lot of fat and happy raptors!  That was evident again today, as it was quite obvious (from the full crops on several birds) that the birds were feeding quite well!

There are two general areas I like to bird in the central part of the state: 1) The Presho/Kennebec corridor near I-90, and 2) the Fort Pierre National Grasslands to the north.  As with most of my central South Dakota trips, I timed my drive today to arrive at Presho right around dawn. My day of birding usually begins with the area just south of Presho, an area that’s been truly magical for me for winter raptors in recent years.  The big attraction for raptors are the game birds in the area.  There are a number of hunting operations in the area, many of which release pheasants for hunters.  There have been times in the winter where I’ll 100-200 Ring-necked Pheasants milling about in a field, and there are plenty of Sharp-tailed Grouse in the area as well.  Today got off to a rocky start as it was uncharacteristically slow in the Presho area. Right upon arriving, I came across a Merlin feeding on a small bird (most likely a Horned Lark), and I did find a couple of Bald Eagles south of Presho, but the Rough-legged Hawks that usually are EVERYWHERE in winter were curiously absent.  I spent more time cruising random gravel roads in Presho and Kennebec area this morning and picked up a stray raptor here or there, but it was a depressingly slow start for the day.

Rough-legged Hawk - Buteo lagopus

A Rough-legged Hawk just after taking flight from a telephone pole. These guys are always the undisputed “kings” of the prairie in winter, at least in terms of sheer numbers. Today’s count of 32 Rough-legged Hawks was actually a bit of a disappointment. I’ve had some winter days where the count has been more than twice that.

Given the lack of action near Presho and Kennebec, I started to drift northward towards the Fort Pierre National Grasslands.  It soon became abundantly clear that the blizzard from this weekend took a increasingly greater toll the further you moved north from I-90.  Gravel roads are usually somewhat immune to freezing rain, but the amount of freezing rain and slush from this storm was truly amazing, and even gravel roads were smooth, slick mirrors in some spots.  It was even worse for birds in the area, though.  The grasslands were coated with a thick sheet of ice and slush, and many of the game birds in the area appeared to be struggling.  On the Fort Pierre National Grasslands themselves, I came across several huge flocks of Sharp-tailed Grouse and Greater Prairie Chickens, milling about in open grassy areas, searching for clear spots in the ice so they could forage. Despite all the potential prey, however, there were very few raptors on the grasslands themselves. The day wasn’t getting any better.

Something has happened on the Fort Pierre National Grasslands over the last 5 years.  5 years ago, winter raptor birding on the Grasslands was typically spectacular.  Scanning the fence posts and telephone poles, it was often unusual if you could drive a mile WITHOUT encountering a raptor.  Over the last 5 years though, the grasslands have been curiously devoid of raptors.  That again was the case today.  As slow as the birding was around Presho in the morning, it was MUCH slower on the Grasslands further north.  There are definitely fewer pheasants and grouse on the grasslands than in the area around Presho, but  the last 5 years have made me wonder if something has also happened to the small rodent population in the area.  It just seems odd that such consistently great birding for many years could nosedive and stay low for so long.

I admit that by noon, I was a little down.  An entire day devoted to birding the area, and it was pretty slow to that point.  I decided to head back down towards Presho and Kennebec again, and it soon became clear that there were PLENTY of raptors in the area, and that they were much more active than they had been in the morning.  Driving the gravel roads just north of Presho and Kennebec, the usually plentiful Rough-legged Hawks, a species that was almost absent during my morning search, were back in force (where had they been this morning?!?). Red-tailed Hawks were present in larger numbers than normal, and I ran into the occasional Prairie Falcon or Ferruginous Hawk as well.  One thing that surprises people is how common eagles are in the area in winter, both Bald Eagles and Golden Eagles.  There are multiple active Bald Eagle nests in the Presho and Kennebec area, in the middle of the grasslands and far from any large water body, while Golden Eagles that are absent in the area in winter often show up in good numbers for the winter.

Greater Prairie Chicken - Tympanuchus cupido

A Greater Prairie Chicken, searching for food in a prairie covered by a crust of ice and snow. Despite how common these are in parts of Central South Dakota, they’re actually a species I’ve never had any luck photographing! Not the greatest photo here, but at least I finally have something.

I didn’t run across any of the “special” winter raptors today. To me, the list of “special” winter raptors includes Gyrfalcon, Snowy Owl, and Short-eared Owl.  I’d estimate that I spot one of those species in about half of the trips I take to the area, but not today.  It was still a beautiful day for birding, and the final raptor count for the day ended up being pretty good.  Honestly, the tally here is a little lower than what I’ve normally experienced in the area in recent years, but that just emphasizes how truly spectacular winter birding has been lately!  The raptor count for the day:

  • Rough-legged Hawks — 32
  • Bald Eagle — 13
  • Red-tailed Hawks – 12
  • Golden Eagles – 5
  • Ferruginous Hawks – 4
  • Merlin – 4
  • Prairie Falcon – 3

 

While raptors are definitely the attraction for birding the area in winter, there have been some other trends in recent years that are certainly interesting.  I started birding 16 years ago, and during those first few winters when I would bird this area, it was always surprising to run across a stray Western Meadowlark here or there.  In recent years, it seems like more and more Meadowlarks stay in the area all winter long, and today, I came across literally hundreds and hundreds.  I also came across two large flocks of American Robins, a species that does sometimes overwinter in the area in small numbers, but there were probably at least 100 Robins in each flock I saw today.  Southeast of Presho, there also have been large numbers of Red-winged Blackbirds that have been overwintering in recent years.

Three different species of birds, each of which is found in ever-increasing numbers in winter over the last several years…hmmm…I wonder what the cause could be?  It’s almost as if there’s some kind of “warming” effect that’s enabling them to overwinter.  Perhaps someday scientists will discover what’s behind such a change in climate.  🙂

Gorgeous Fall Birding

Osprey in flight - Pandion haliaetus

An osprey circling over Lake Alvin, near Sioux Falls.

In about, oh, 2 weeks, I’m likely to bemoan the fact that I live in often frigid South Dakota.  Winter here isn’t for the faint of heart, and even moving just one state up from where I grew up (Nebraska), it’s clearly, much colder here. But, I have to admit…May through October are usually freakin’ spectacular in terms of weather.  Yes, we get some hot muggy days, but more often than not, we have some truly wonderful weather from late spring through mid-fall.

The weather this fall has been above-and-beyond wonderful, with crisp nights, but typically sunny and warm days.  Today, November 1st, and it was sunny most of the day, high of about 65, with nary a breeze.  I took the opportunity to go birding this morning, with the intention of doing my first real hard searching for Saw-whet Owls.  People banding them in the state have been catching them, so clearly they’re moving through.  I bush-whacked through thick cedar stands for about 3 hours this morning with nary a hint of an owl.  Not only no owls, but not a bit of “whitewash” (the white-stained tree branches and ground below their frequent roosts), and no pellets.  My guess is that it’s still just too early.

Red-tailed Hawk - Buteo jamaicensis

Red-tailed Hawk protecting a kill. Another was just a few feet away, hoping for a bite.

It still was a wonderful day to get out and walk around, and I did have other birds that “saved the day”.  First, an Osprey circling over Lake Alvin, just south of Sioux Falls.  Osprey aren’t a species you see all that often around here, so it was nice to get good close looks at him.

Near there I came across a pair of (young?) Red-tailed Hawks, hanging out on the ground on the edge of a tilled field.  One was clearly protecting something that it had caught, with it’s wings spread a bit and hovering over the prey like a protective umbrella. This bird was feeding while another was sitting about 10 feet away.  You definitely don’t think of raptors like this “sharing”, so I would bet that 2nd bird ended up going hungry.

American Robin - Turdus migratorius

American Robin gorging on berries in a cedar tree. An awfully common species…but in frigid South Dakota, one I’m not likely to see much of for the next 5 months!

The other thing of note this morning were the scads of birds gorging on berries of cedar/juniper.  We get a few American Robins that actually over-winter here, but overall most move south of South Dakota a little ways.  This time of year though you certainly can see many Robins gorging on berries in preparation for winter.  It wasn’t just Robins, and there were also many Cedar Waxwings joining the feast.  I know encroaching eastern red cedar isn’t a popular thing for many, but one thing you do have to admit is they provide a heck of a lot of good habitat and food for some species of birds.

One last nice bird to end the birding portion of the day…a beautiful male Red-bellied Woodpecker at our feeder at home.  We live across the street from the Big Sioux Recreation Area, a State Park with a lot of mature forest.  You often see (and hear!) Red-bellied Woodpeckers in the park, but it’s not very often one makes the effort to cross the street and visit my yard.

Great way to end a gorgeous fall birding day in South Dakota!

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